Viktor Dukhovni:
> No issues. Postfix processes long lines in chunks, and can handle
> arbitrarily many chunks. The message size limit will ultimately
> limit the longest message line.
>
> You can set smtp_line_length_limit to 0, which means "no limit".
> On a 32-bit system, Postfix would then be able process lines of up
> to 2GB, and on a 64-bit system lines of up to 2^63-1 bytes. In
> practice your message size limit will be smaller than either.
There are also header_size_limit (default: 102400 bytes) for the
maximum length of a logical header line, and header_address_token_limit
(default: 10240 tokens). Excess content is unceremonously dropped
because it is misuse of mail protocol (sites that need lots of Bcc
header info should consider using a mailing list manager).
Note that Sendmail has a default limit of 32kB limit for the entire
message header and rejects messages that exceed the limit.
Wietse
